If limx→∞ 1+ax−4x22x=e3, then ‘a’ is equal to

If limx1+ax4x22x=e3, then 'a' is equal to

  1. A

    23

  2. B

    32

  3. C

    2

  4. D

    12

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    Solution:

    We have,

    limx1+ax4x22x=e3elimx2xax4x2=e3limx2a8x=32a=3a=32

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